All 26 Books of Prime Entry questions
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What controls help ensure completeness and accuracy in the books of prime entry? What is the accounting equation and how does bookkeeping maintain it? What is the difference between capital and revenue expenditure? How does a settlement (cash) discount get recorded compared with a trade discount? How would you record the purchase of a non-current asset on credit in the books? How do you record opening entries when starting a new set of books?
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How do the books of prime entry contribute to the double-entry system?

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Answer

Books of prime entry summarize transactions so that only periodic totals are posted to the nominal ledger, reducing the number of ledger entries and errors. They ensure each transaction ultimately produces equal debits and credits: e.g., the sales day book total debits the control account and credits sales and VAT. Individual personal-account postings are memorandum records reconciled via control accounts.
Real-world example Posting monthly day book totals rather than every invoice keeps the nominal ledger concise while control accounts verify accuracy.

Common follow-ups: Why post totals rather than each transaction? | How do control accounts verify the memorandum ledgers?

Control Accounts Trial Balance Books of Prime Entry
All 26 Books of Prime Entry questions